Excel 2010 Stopped Working notice

I now have two files that crash in Excel 2010 upon opening. The exact phrase is "Microsoft Excel has stopped working". The error reference is to VBE7.DLL, version 7.0.15.90. I have removed all available references to VBA except Visual Basic for Applications
and Microsoft Excel 14.0 Object Library, as they must be being used as I cannot remove them. I have reinstalled Excel and tried Safe Mode, but the problems keep occurring. Calculation is on Manual. The two files are large, with several external references
and many conditional formats. I cannot even get to the Update pop-up request, as the files crash just before opening. I had used each for several days after they were created before they suddenly ceased being operational. No significant changes were made
after creation before they stopped working.